package com.guli.gulimall.product.config;

import com.alibaba.fastjson.support.spring.GenericFastJsonRedisSerializer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;


/**
 * 放入自定义缓存你配置，加入json序列化机制
 * 其他配制见官方
 */
@EnableConfigurationProperties(CacheProperties.class)
@Configuration
@EnableCaching
public class MyCacheConfig {

//    @Autowired
//    CacheProperties cacheProperties;

    /**
     * 配置文件properties的配置没有用上
     *
     * 1.原来和配置文件绑定的配置类是这样子的
     * @ConfigurationProperties(prefix = "spring.cache")
     * public class CacheProperties {}
     *
     * 2.要让他生效  使用@EnableConfigurationProperties 注解引入
     *   如何使用：
     *   (1) @Autowired 使用
     *   (2) RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties)
     *      直接在参数中引入。
     *
     * @return
     */
    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties){
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
//        config = config.entryTtl();
        //key
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        //value
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));
        //拿到配置
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        //将配置文件中的所有配置生效
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }

        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixCacheNameWith(redisProperties.getKeyPrefix());
        }

        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }

        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }
        return config;
    }
}
